Shulou(Shulou.com)05/31 Report--

This article mainly introduces "what are the characteristics of Redis5.0". In daily operation, I believe many people have doubts about the characteristics of Redis5.0. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what are the characteristics of Redis5.0?" Next, please follow the editor to study!

New stream data type (Stream data type)

New Redis module API: timer, cluster and dictionary API (Timers, Cluster and Dictionary APIs)

RDB can now store LFU and LRU information

The cluster manager in redis-cli is migrated from Ruby (redis-trib.rb) to C language code. Execute the command `redis-cli-cluster help` for more information

New ordered set (sorted set) commands: ZPOPMIN/MAX and blocking variants (blocking variants)

Upgrade Active defragmentation to v2 version

Enhance the implementation of HyperLogLog

Better memory statistics report

Many commands that contain subcommands now have a HELP subcommand

Performance is better when clients connect and disconnect frequently

Many bug fixes and other improvements

Upgrade Jemalloc to version 5.1

Introduction of CLIENT UNBLOCK and CLIENT ID

New LOLWUT command http://antirez.com/news/123

Discard the term "slave" where backward compatibility does not exist

Differential Optimization in Network layer

Improvements related to Lua:

Better propagate Lua scripts to replicas / AOF

The Lua script can now time out and enter the-BUSY state in the copy

Introduce dynamic HZ (Dynamic HZ) to balance idle CPU utilization and responsiveness

The core code of Redis has been refactored and improved in many aspects

Before the official release, from the information disclosed before, Redis Streams is the key content of this release.

Stream is a new data type introduced by Redis 5.0.It simulates log data structures in a more abstract way, but the nature of logs is still intact: just like log files, they are usually implemented as files opened in append-only mode, and Redis streams are mainly append-only data structures. At least conceptually, because Redis Streams is an abstract data type represented in memory, they implement more powerful operations to overcome the limitations of the log file itself.

With the introduction of Stream content in java8 for the first time, other frameworks and languages are also introducing Stream one after another. For example, I recently heard that Javascript is introducing Stream features.

At this point, the study on "what are the characteristics of Redis5.0" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.